TRIBE XXI. CRYPTORHYNCHINI. 



485 



Not yet recognized from Indiana, though it should occur. 

 Enterprise, Miss., June 11. Recorded from Cincinnati, Ohio. 

 Beverly Hill, Chicago, 111., May 21. Ranges from Pennsylvania, 

 Iowa and Kansas, south to District of Columbia and Mississippi. 

 Not rare by beating the great ragweed, Ambrosia trifida L., in 

 August. (Hamilton.} The alternate intervals are distinctly 

 more carinate in the Chicago specimens. 



IV. CHALCODERMUS Schon., 1837. (Gr., "bronze" -f "skin.") 



Oval, robust, convex species, usually with a coppery or bronze 

 lustre and having the beak more slender than in Rliyssematus, 

 as long as or longer than thorax; elytral intervals not carinate, 

 the outer striae as mentioned in key ; femora toothed ; tibia 1 with- 

 out a tooth on outer edge near apex, the front ones narrower at 

 basal third. Chalcodernuis spinifer Boh. of the Florida list is 

 Stcrneclms armatus Casey, the identification as C. spinifer by 

 Dr. LeConte having been erroneous. 



KEY TO EASTERN SPECIES OF CHALCODERMUS. 



Thorax coarsely punctured, not strigose; body black. 



a. 

 aa. Thorax deeply strigose. 



b. Body brown, elytra paler; thoracic strigse regular. 

 &&. Body black; thoracic strigse irregular. 761. 



759. 



760. COLLARIS. 

 I.N.EQUICOLLIS. 



Fig. 1 08. a, Beetle; b, larva; c, head of larva; d, pupa. a, b and 

 d X 5- (After Chitteiiden.) 



759 (8746). CHALCODERMUS ^.NEUS Boh., Schon., 1837, 388. 



Oval, convex, robust. Black, finely alutaceous, usually with a bronzo 

 tinge. Beak nearly straight, slightly longer than thorax, sparsely punc- 

 tulate, feebly carinate; eyes very narrowly separated. Thorax one-fourth 

 wider at base than long, suddenly narrowed in front, sides obtusely toothed 

 behind the constriction, disc very coarsely and rather sparsely punctate. 

 Elytra oval, convex, sides subparallel on basal half, then gradually nar- 

 rowed to apex; disc with rows of large, deep, rather distant punctures; in- 

 tervals alutaceous, each with a row of very fine punctures, each puncture 

 bearing a very minute scale. Beneath coarsely, abdomen more sparsely, 

 last ventral more densely, punctured. Length 4.8 5.5 mm. (Fig. 108.) 



